I love this, this is cute but the things is the goal. The goal was to eliminate demons, but doesn't demons have their own rationality? It's not like the demons is a beast animal that attacks without reasons, they even talk. If it's elimination of demons, doesn't that mean an eradication/elimination of an entire race itself? Isn't it quite cruel if some demons doesn't want war to begin with? Honestly, if I were them I'd make demons my subordinate or maybe an alliance. Isn't it better to unite instead? Or maybe make the demons into a slaves (jk, i'm not that cruel but it's better than an entire eradication tho)